Skip to main content
  1. Home
  2. Photography
  3. Legacy Archives

Shoot video with a DSLR? This clever hack extends battery life by up to 9 hours

Add as a preferred source on Google

Most DSLRs these days are capable of recording Full HD video, and thanks to clever hackers such as the Magic Lantern project, their capabilities are often equal to expensive dedicated cinema cameras. Which is why Canon DSLRs in particular are often used in independent productions, but also by hobby videographers. On the downside, video recording can quickly drain your battery’s juice. Luckily, there is an easy hack that’ll give a serious boost to your camera’s battery life.

Unhappy with the amount of video shooting time he got out of his Canon EOS Rebel T4i DSLR (a camera that has since been discontinued, replaced by the T5i), YouTuber Chris Winter devised a way to hook up a 10,000 mAh external battery pack to his camera, using little more than some velcro tape, a special hot shoe mounting plate, and a DC coupler, i.e., a “dummy battery” that connects the battery pack to the camera. By using these readily available and affordable items, he managed to boost his camera’s battery life to nine hours of video shooting!

Recommended Videos

But with all things awesome, there are a couple of downsides to this. For one, you’ll need to do a bit of tinkering yourself. In order to get the battery pack hot-shoe mountable, you’ll have to somehow get it attached to a hot shoe mounting plate that has the right size, which Chris managed to do with velcro tape. When the external battery is in place and powering your camera, you’ll unfortunately have no hot shoe left for mounting, say, an external microphone or a video light. (That is, unless you attach additional cold shoes to your battery pack – again using velcro tape, of course.)

And finally, the cable that goes from the battery pack to the “dummy battery” DC coupler that sits in your camera’s battery compartment might become a bit of a nuisance when operating the camera, considering it’ll be hanging loose over the exact region where all the buttons and dials are located on the camera’s back. But then again, when you’re out shooting a video, you may not want to have to change batteries every hour, so we definitely see how this could improve your video shooting experience.

If you’re not a Canon DSLR user, fear not: DC couplers of the kind that Chris used for his hack are also available for other camera brands, including Nikon, Pentax, Olympus, and Sony. You’ll just have to do a bit of searching through all the various models until you find the correct one for your camera.

(Via PetaPixel via DIY Photography)

Felix Esser
Former Digital Trends Contributor
Felix is a freelance tech journalist with a strong focus on photography. Based out of central Germany, he contributes to…
Sigma FP2 is the world’s smallest full-frame camera built for photographers and filmmakers
The new mirrorless camera combines 24.5MP photography, 6K OpenGate recording, and expandable accessories in a compact body.
Sigma FP2 featured

Full-frame cameras tend to be chunky beasts, but Sigma wants to prove that big imaging doesn't need a big body. Enter the Sigma FP2, the successor to its tiny, boxy fp mirrorless camera. It keeps the same modular design but packs in some serious upgrades, including a 24.5-megapixel partially stacked full-frame sensor, improved autofocus, 6K video recording, and 70GB of built-in storage. Sigma calls it the world's smallest full-frame camera, and while it might be tiny, the same cannot be said for its price tag.

Sigma FP2 brings faster shooting and 6K video

Read more
This award-winning phone thermal camera is 10% off for Halloween, saving you $107
Thermal Master P3 thermal camera drops with code THERMCAM10 (save $107 total): 512x384 IR super resolution, an adjustable-focus lens, and 2026 Tom’s Guide AI Award winner.
Man using thermal camera attachment with phone

A phone thermal camera is one of those tools you don’t think you need until the first time it saves you from an expensive problem, and the Thermal Master P3 just got easier to try. For Halloween, it’s discounted with the code THERMCAM10, a 10% cut that works out to $107 off the total. It’s also fresh off a win at the 2026 Tom’s Guide AI Awards for best phone thermal camera, which is the kind of third-party nod that separates a serious tool from the cheap clip-on sensors that flood this category.

Thermal Master Halloween sale

Read more
I found 8 early Prime Day camera and creator gear deals I’d actually buy
Cameras, mics and webcams are already getting cheaper before Prime Day
Prime Day Camera Deals

We are nearing Amazon's Prime Big Deal Days, which officially run October 6 and 7. But there is no need to wait until the sale begins to start looking. Early offers are already live, and camera gear is one category where I found enough worthwhile discounts to put together a proper creator-focused list.

I’ve deliberately gone wider than interchangeable-lens cameras here. There are pocket and action cameras, a 360 camera, an instant camera, two wireless microphone systems, and a pair of webcams covering very different budgets. Prices were checked on October 2, and as always with Amazon, they can move quickly.

Read more